lefebvre



Patented Mar. l4, I899. C. LEFEBVRE.

SPLIT BELT PULLEY.

(Application filed Sept. 10, 1898.)

(No Model.) 2 Sheets8heet .L

in: upynqs PETERS co PHOTO-LUNG" WASHINGTON, n, c.

No. 620,940. Patented Mar. l4, I899.

Y C. LEFEBVRE.

SPLIT BELT PULLEY.

(Application filed Sept. 10, 1898.)

2 Sheets-8heet 2.

(No Model.)

THE Norms PETERS c FHOTO-LITHQ, WASHINGTON, o. c.

NITED' STATES Fries.

PATENT SPLIT BELT-PU LLEY.-

SPECIFICATIONforming part of Letters Patent No. 620,940, dated March 14,1899. Application filed September 10, 1898. Serial No. 690,612. (Nomodel.)

To all whom it may concern.-

Be it known that I, OARLos LEFEBVRE, civil engineer, of 1 Place desNantiers, in the city of Valenciennes, Republic of France, have inventedan Improved Split Belt-Pulley, of which the following is a full, clear,and exact description.

My invention relates to a split belt-pulley constructed entirely ofsheet metal and possessing the advantages of great lightness andstrength, the pulley being made in separable halves united diametricallyby means of bolts.

The invention is illustrated by way of example in the accompanyingdrawings, in which Figure 1 represents an elevation, and Fig. 2 a sideview, of one-half of the pulley. Fig. 3 is a section on line A B, Fig.2; and Fig. 4 is a side view of a complete pulley.

Each half of the pulley is composed of two semicircular dishes orconcave webs a a, stamped out of sheet metal and having their circularedges stamped up into flanges a, which abut continuously against the rim1), which may be made of suitable form. The rectilinear diametrical orabutting edges a of the webs a a have also ears or projections c stampedup at a right angle at, or near the rim, and also ears or projections dstamped up at an angle near the middle of the edge (L The portions sostamped up are perforated to receive the bolts by which the two halvesof the pulley are united. Next the rim 1) are disposed angle-irons e e,which are connected both to the ears 0 c of the webs a a. andto thestampedup flanges a of the latter for the purpose of strengthening theears. Each half of the boss is formed of a semicylindrical shell f, theedges of which are turned outward fromthe center to form ears f for thepurpose of being bolted to the ears cl d of the webs a a, to strengthenthe same. The two halves of the pulley, constructed as hereinbeforedescribed, are united by bolts, as usual in the case of split pulleys.

The construction of pulley described presents' the advantage of beingvery economical, while at the same time affording great strength both inthe rim and web or body of the pulley, which is capable of supportingconsiderable strains for a considerable period without getting out ofshape.

What I claim, and desire to secure by Letters Patent, is-

1. A two-part pulley consisting of semicircular pulley-sections securedtogether and each comprising two semicircular dished Webs a stamped upfrom thin sheet metal with raised peripheral edges or flanges a securedto the rim 1) of the pulley, and provided with integral ears c c d dbent away from the web a at an angle, whereby the halves of the pulleymay be united by bolts passing through the ears.

2. A two-part pulley consisting of semicylindrical pulley-sectionssecured together to constitute a pulley, each comprising a pair ofdished webs a formed of sheet metal provided with turned -over circularedges or webs a secured to a rim 1), integral ears 0 at or near thecircular edges turned over at an angle to the web a, integral ears d ator near the middle of the abutting edge of the web and turned over at anangle to the web and an eared semicylindrical shell f adapted to besecured to the bent-over ears d cl whereby two pulley-sections may besecured together by bolts passing through the ears 0 c and d d toconstitute a split pulley.

The foregoing specification of my improved split belt-pulley signed byme this 27th day of August, 1898.

CARLOS LEFEBVRE. Witnesses:

ARMAND LEE, HENRI METTE.

